Influence of composition and heat treatment on damping and magneto strictive properties of Fe-18%(Ga + Al) alloys
Influence of composition and heat treatment on damping and magneto strictive properties of Fe-18%(Ga + Al) alloys
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影响%20of%20成分%20and%20热%20处理%20on%20阻尼%20and%20磁%20严格%20属性%20of%20Fe-18%(Ga%20+%20Al)%20合金
DOI：
10.1016/j.actamat.2014.05.044
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发表时间：
2014
期刊：
影响因子：
9.4
通讯作者：
Lograsso T. A.
中科院分区：
文献类型：
--
作者：
Golovin I. S.;Palacheva V. V.;Zadorozhnyy V. Yu.;Zhu J.;Jiang H.;Cifre J.;Lograsso T. A.
分析了 Fe82Ga(18−x)Alx(x= 0, 5, 8, 12) 合金的结构、磁致伸缩和阻尼性能。研究了 Fe-18(Ga + Al) 合金的滞弹性响应与受迫振动的温度（从 0 到 600 °C）、频率（从 0.01 到 200 Hz）和振幅（从 0.0004% 到 0.2%）的函数关系。 Fe-Ga-Al合金在室温下相对较高阻尼能力的起源是通过施加磁场和不同的热处理方案来确定的。研究发现，在 Fe-18% Ga 合金中用 Al 替代 Ga 可降低磁致伸缩和阻尼。合金的热处理对合金阻尼能力的影响大于其化学成分的变化。分析了 Fe-Ga-Al 合金中的热激活频率和温度相关的滞弹性效应，并评估了松弛过程的相应激活参数。记录了结构转变引起的内耗效应，发现其与 A2→D03→L12 反应一致。讨论了所有迟弹性效应的物理机制。
The structure, magnetostriction and damping properties of Fe82Ga(18−x)Alx(x= 0, 5, 8, 12) alloys were analyzed. The anelastic response of Fe–18(Ga + Al) alloys was studied as a function of temperature (from 0 to 600 °C), frequency (from 0.01 to 200 Hz) and amplitude (from 0.0004% to 0.2%) of forced vibrations. The origin of the relatively high damping capacity of Fe–Ga–Al alloy at room temperature was determined by applying a magnetic field and different heat treatment regimes. The substitution of Ga by Al in Fe–18% Ga alloys was found to decrease magnetostriction and damping. The heat treatment of alloys influences the damping capacity of alloys more than variations of their chemical compositions. Thermally activated frequency and temperature-dependent anelastic effects in Fe–Ga–Al alloys were analyzed and the corresponding activation parameters for relaxation processes were evaluated. Internal friction effects caused by structural transformations were recorded and were found to be consistent with the A2 → D03→ L12reaction. The physical mechanisms for all anelastic effects are discussed.